AR-15 5.56/.223 20" Black Diamond Competition Upper Assembly / Tanker / Mlok. You inquired and we listened. For a limited time, black diamond fluted 5.56 NATO 20" Black Diamond uppers are available by Moriarti just for you. This drop-in upper will attach to virtually any standard Mil Spec AR-15 lower assembly. Available in 416R Stainless Steel black diamond flute threaded heavy barrels, with 1 and 8" twist and rifle slim profile mlok free float handguards.
Barrel - 20" 416 stainless steel fluted bull barrel. Black Nitride diamond Flute. Nitride Plating is hand-made, done upon request. Hardened to 26-32 rc and stress relieved. Chambered in 5.56 NATO 1-8 rh twist. .750 under gas block. Threaded 1/2x28. M4 feedramps. Rifle gas system. Barrel is finished off by Competition Muzzle Brake in nitride, triport.
A3 flat top upper receiver - made from certified 7075-t6 aluminum forgings. Black hardcoat anodized to Gov. Specs. Forward assist and dust cover installed. M4 feedramps.
Gas system - .750 low profile gas block, made from steel and nitride coated. Rifle length gas tube.
Handguards - 15" rifle-length Mlok free float rail. Slim design. Made from aircraft quality aluminum and black hard coat anodized. Rails may differ in design, based on stock availability, the same excellent quality.
This is a limited edition upper. Images may not be an exact representation of the product.
